30-Second HIIT Timer for Maximum Intensity

Thirty seconds is the perfect HIIT interval duration. Long enough to reach maximum effort, short enough to maintain peak intensity throughout your workout.

Science of 30-Second Intervals

Research shows 30-second high-intensity intervals maximize both aerobic and anaerobic benefits. This duration allows you to reach 85-95% maximum effort while maintaining proper form throughout the interval.

Perfect for burpees, mountain climbers, jump squats, high knees, or any explosive movement. The timer keeps you honest about intensity and duration.

HIIT Structure

Work at maximum effort for 30 seconds, then rest for 30-90 seconds. Repeat 8-12 rounds for a complete workout. The work-to-rest ratio depends on your fitness level and goals.

Getting Results

Push yourself to 85-95% maximum effort during each 30-second interval. You should be breathing hard and unable to hold a conversation. Quality over quantity - maintain intensity rather than just going through the motions.